12213002220 has 96 divisors (see below), whose sum is σ = 34484244480. Its totient is φ = 3229501440.

The previous prime is 12213002209. The next prime is 12213002233. The reversal of 12213002220 is 2220031221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12213002220.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4043871 + ... + 4046889.

It is an arithmetic number, because the mean of its divisors is an integer number (359210880).

Almost surely, 2^12213002220 is an apocalyptic number.

12213002220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12213002220 is an abundant number, since it is smaller than the sum of its proper divisors (22271242260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12213002220 is a wasteful number, since it uses less digits than its factorization.

12213002220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3575 (or 3573 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 12213002220 its reverse (2220031221), we get a palindrome (14433033441).

The spelling of 12213002220 in words is "twelve billion, two hundred thirteen million, two thousand, two hundred twenty".